Ash-sifter.



L. LIBBMAN.

ASH SIFTBR.

APPLICATION FILED JAN. 31, 1910.

Pateilted Aug. 20, 1912.

Invew%0 T Z0315 many LOUIS LIBBMAN, OF EVERETT, MASSACHUSETTS, ASSIGNORTO GEM MANUFACTURING COMPANY, OF CHELSEA, MASSACHUSETTS, A CORPORATIONOF MASSACHUSETTS.

ASH-SIFTER.

Specification of Letters Patent. I

Patented Aug. 20, 1912.

Application filed January 31, 1910. Serial No. 541,011.

To all whom it may concern 7 Be it known that I, LoU1s LIBBMAN, acitizen of the UnitedaStates, residing at Everett, in the county ofMiddlesex and State of Massachusetts, have invented an Improvement inAsh-Sifters, of which the following description, in connection with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting like parts.

-My invention is an ash sifter, having for its object economy,simplicity and convenience of construction, and convenience ofoperation.

The constructional details and the various advantages of my inventionwill be more apparent from the following description taken withreference to the accompanying drawing, in which I have shown one of manypossible embodiments of my invention.

In the drawing, Figure 1 is a central vertical longitudinal sectionalview; Fig. 2 is a cross-sectional view taken approximately. on the line2-2, Fig. 1.

My ash sifter is intended for usewith a usual ash receptacle 1, and forthis purpose is provided with a correspondingly shape cover 2 to fitdown over the open, top of the ash receptacle. The ash sifter consists,broadly speaking, of an outer casing or jacket 3, an innerlongitudinally extending sieve or rotary screen 4, a hopper 5 at oneend, an outlet 6 for the cinders at the opposite end, and an interveningoutlet or ashes-opening 7 in the ash-receptacle cover beneath the sieve4, and one of the leading features of my invention resides in providingthe outer casing or jacket with opposite inclined walls 8 on its lowerside, which have a large number of advantages, one being that theydirect the ashes positively and certainly lnto the receptacle andprevent any possibility of the ashes lodging as in the case of acylindrical casing, and another advantage being that the hexagonal orother polygonal shape in cross-section is much more economical'inmaterialand process of manufacture and permits an openbottomconstruction which may be positively secured on the cover without theuse of rivets or other fastening means, simply by jointing the parts insuch a manner that the casing may be slid onto the cover or removedtherefrom, as best shown in Fig. 2, where it will be seen that thecasing consists of a piece of sheet metal bent around to con-- st-itutefive sides of the casing and upturned at 9 at its opposite longitudinaledges, which fit into over-turned flanges 10 formed at the edges of theopening 7 in the cover, the result being that the casing has itsupturned flanges or edges 9 simply inserted in the cooperating flanges10 of the cover 2 and then the parts are slid forward into tne positionshown in Fig. 1.. with the result that. the ash sifter casing is therebymounted in correct position and yet is practically immovable andheldpermanently as desired. The opposite ends 11, 12, of the casing fittightly in the casing and each is set in or provided with a deep flange13, 14, for giving strength and making a tight joint. The end 12 has abearing 15'for the project-ing end 16 of the sieve carrier wire 17,which is herein shown as bent spirally and slipped tightly into'thecylindrical sieve 4 (and if necessary soldered, although this is notusually necessary). The handle end 18 of the wire or rod 17 is journaledat 19 in the hopper 5, said hopper being permanently united for example,by electric welding with dthe end 11.

A special feature of my invention resides in the formation of theconnection between the hopper 5 and the end 11. Viewing Fig. 1, it willbe seen that the throat portion of the hopper extends inwardly beyondthe face of the end 11 as indicated at 20' and thence has a circularvertical flange 21 connecting with the horizontal shoulder 22 of the end11. This construction gives great bracing strength to resist thetendency of the hopper when heavily loaded to buckle or bend outward,deform the end 11, tend to make the sieve bind, and disarrange andistort the sifter' generally. The necessary stiffness has heretoforebeen usually provided in ash sifters by braces, angle irons, riveting orother comparatively expensive, cumbersome and heavy arrangement, whereasI secure the requisite strength simply by the formation or bending ofthe metal sheet which constitutes the throat of the hopper, and the endof the ash sifter. The adjacent end of the sieve or screen is providedwith a heavy metal hoop 23 rolled over and reinforced at 24, which fitsover the shoulder or projection 22 of the end and serves to center thesieve and take the weight off from the handle and the bearing 19. Thehoop closes the holes at the endof the sieve so that the ashes cannotescape from the sieve until they get over the opening 7 and therolled, over edge 24 of the hoop serves to keep the .joint tight and,therefore keep the ashes in the sieve. The flange 21 constitutes at itslower side a dropfor the ashes so that there is'no' tendency of theashes to lodge in the hopper but they are practically compelled to dropfrom the throat of the hopper directly into the sieve. The down-turnedend of -the handle 18 is on the opposite side from the adjacent radiallyconnecting portion 25 of the rod 17 at the end of the sieve, sothat-thereby the sieve naturally assumes the position shown in Fig. 1when at rest, which leaves an open space 26 at the lower bottom end ofthe throat of the hopper so that, thereby the wire orrod 17 is not in.the way of the ashes so as to interfere with their sliding downwardlyfreely when pouredv into the hopper. 1 7

From the" above description it will be seen that although my ash sifterrequires no soldering or riveting, is exceedingly strong and simple,readily takn apartand put together, and is clean and neat in operation.I There are. no corners or places where the ashes I, are liable to lodgeand the cons struction calls for a minimum amount of sheet metal. Havingdescribed my invention, what I claim as new and desire to secure byLetters 35 Patent of the United States, is,

1. ash-Sifter, comprising a receptaclecover, havin arectangular openingtherein, the longitudmal edges of which are bent upwardly and thendownwardly to form guides, a casing, polygonal in vertical crosssectionand havin g lts bottom side removed to form an opening corresponding tothe opening in said receptacle cover,the longitudinal edges of saidcasingiopenmg being bent outwardly and upwardly to' in said guides,whereby no obstructlonis fit slidably,

offered to 'ashes falling through said ;open'- mg, and a rotary sievecasing.

2. Inan ash sitter, a casing having an mounted in said open inlet end, ahopper terminating in a flanged end: removably fitting said casing,

said removable end having an inwardly ex tending internal shoulder,

a'rotary sieve inclosin said internal shoulder, a circular radial angeextending from said internal shoulder toward the axis of said sieve andverging at vits inner edge outwardlyvinto said hopper, thereby lowerside from the hopper into said sieve for directing the ashes beyond thejoint betwe'en the sieve and the removable end and providing strengthand bracing construction for the removable end and hopper.

In testimony name to this s ecification, in the presence of two subscribng witnesses,

e LoUIs LIBBMAN.

Witnesses:

. F. D. FULLER;

GE'o. F. HIGGINS.

whereof, I have signed my,

formlnga drpp atits

